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arXiv 2003.10507math.OC
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鲁棒网络设计中离散不确定集与多面体不确定集的比较

A Comparison of Discrete and Polyhedral Uncertainty Sets for Robust Network Design

Francis Garuba, Marc Goerigk, Peter Jacko

摘要:

我们考虑一个网络设计和扩展问题,我们现在需要进行容量投资,以便尽可能满足不确定的未来需求。为了使用鲁棒的优化方法,我们需要构建一个不确定性集,其中包含我们认为可能的所有场景。在本文中,我们讨论了如何构建两种常见类型的不确定性集,这是离散和多面体不确定性,使用现实世界的数据。我们采用聚类生成一个离散的不确定性集,并将超平面顺序生成一个多面体的不确定性集。然后,我们比较了这两种类型的模型在真实世界数据中的鲁棒解决方案的性能。我们的研究结果表明,多面体模型,而在最近的网络设计文献中流行的,是有效的比离散模型的计算负担和解决方案的质量方面考虑的性能指标。

英文摘要:

We consider a network design and expansion problem, where we need to make a capacity investment now, such that uncertain future demand can be satisfied as closely as possible. To use a robust optimization approach, we need to construct an uncertainty set that contains all scenarios that we believe to be possible. In this paper we discuss how to construct two common types of uncertainty sets, which are discrete and polyhedral uncertainty, using real-world data. We employ clustering to generate a discrete uncertainty set, and place hyperplanes sequentially to generate a polyhedral uncertainty set. We then compare the performance of the resulting robust solutions for these two types of models on real-world data. Our results indicate that polyhedral models, while being popular in the recent network design literature, are less effective than discrete models both in terms of computational burden and solution quality with respect to the performance measure considered.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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